| # |
| # linux/arch/i386/boot/compressed/Makefile |
| # |
| # create a compressed vmlinux image from the original vmlinux |
| # |
| |
| HEAD = head.o |
| SYSTEM = $(TOPDIR)/vmlinux |
| |
| OBJECTS = $(HEAD) misc.o |
| |
| ZLDFLAGS = -e startup_32 |
| |
| # |
| # ZIMAGE_OFFSET is the load offset of the compression loader |
| # BZIMAGE_OFFSET is the load offset of the high loaded compression loader |
| # |
| ZIMAGE_OFFSET = 0x1000 |
| BZIMAGE_OFFSET = 0x100000 |
| |
| ZLINKFLAGS = -Ttext $(ZIMAGE_OFFSET) $(ZLDFLAGS) |
| BZLINKFLAGS = -Ttext $(BZIMAGE_OFFSET) $(ZLDFLAGS) |
| |
| all: vmlinux |
| |
| vmlinux: piggy.o $(OBJECTS) |
| $(LD) $(ZLINKFLAGS) -o vmlinux $(OBJECTS) piggy.o |
| |
| bvmlinux: piggy.o $(OBJECTS) |
| $(LD) $(BZLINKFLAGS) -o bvmlinux $(OBJECTS) piggy.o |
| |
| head.o: head.S |
| $(CC) $(AFLAGS) -traditional -c head.S |
| |
| comma := , |
| |
| misc.o: misc.c |
| $(CC) $(CFLAGS) -DKBUILD_BASENAME=$(subst $(comma),_,$(subst -,_,$(*F))) -c misc.c |
| |
| piggy.o: $(SYSTEM) |
| tmppiggy=_tmp_$$$$piggy; \ |
| rm -f $$tmppiggy $$tmppiggy.gz $$tmppiggy.lnk; \ |
| $(OBJCOPY) $(SYSTEM) $$tmppiggy; \ |
| gzip -f -9 < $$tmppiggy > $$tmppiggy.gz; \ |
| echo "SECTIONS { .data : { input_len = .; LONG(input_data_end - input_data) input_data = .; *(.data) input_data_end = .; }}" > $$tmppiggy.lnk; \ |
| $(LD) -r -o piggy.o -b binary $$tmppiggy.gz -b elf32-i386 -T $$tmppiggy.lnk; \ |
| rm -f $$tmppiggy $$tmppiggy.gz $$tmppiggy.lnk |
| |
| clean: |
| rm -f vmlinux bvmlinux _tmp_* |
